Q.2 When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?


Answer :

The deflection in the compass needle shows that the current is flowing through the wire and hence the current is flowing through the circuit.

Now when the free ends of a tester are dipped into a solution, the magnetic needle shows deflection.

That means the solution is certainly a conducting solution. And all the materials used in this case are conducting materials and thus the circuit becomes complete and the needle shows deflection.

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